87031396830 has 64 divisors (see below), whose sum is σ = 238742880768. Its totient is φ = 19890541440.

The previous prime is 87031396819. The next prime is 87031396841. The reversal of 87031396830 is 3869313078.

It is an interprime number because it is at equal distance from previous prime (87031396819) and next prime (87031396841).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87031396830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2268084 + ... + 2306136.

It is an arithmetic number, because the mean of its divisors is an integer number (3730357512).

Almost surely, 2^87031396830 is an apocalyptic number.

87031396830 is an abundant number, since it is smaller than the sum of its proper divisors (151711483938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87031396830 is a wasteful number, since it uses less digits than its factorization.

87031396830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48961.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 87031396830 in words is "eighty-seven billion, thirty-one million, three hundred ninety-six thousand, eight hundred thirty".